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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | /* * MIPI DSI Bus * * Copyright (C) 2012-2013, Samsung Electronics, Co., Ltd. * Andrzej Hajda <a.hajda@samsung.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __DRM_MIPI_DSI_H__ #define __DRM_MIPI_DSI_H__ #include <linux/device.h> struct mipi_dsi_host; struct mipi_dsi_device; /* request ACK from peripheral */ #define MIPI_DSI_MSG_REQ_ACK BIT(0) /* use Low Power Mode to transmit message */ #define MIPI_DSI_MSG_USE_LPM BIT(1) /** * struct mipi_dsi_msg - read/write DSI buffer * @channel: virtual channel id * @type: payload data type * @tx_len: length of @tx_buf * @tx_buf: data to be written * @rx_len: length of @rx_buf * @rx_buf: data to be read, or NULL */ struct mipi_dsi_msg { u8 channel; u8 type; u16 flags; size_t tx_len; const void *tx_buf; size_t rx_len; void *rx_buf; }; /** * struct mipi_dsi_host_ops - DSI bus operations * @attach: attach DSI device to DSI host * @detach: detach DSI device from DSI host * @transfer: send and/or receive DSI packet, return number of received bytes, * or error */ struct mipi_dsi_host_ops { int (*attach)(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi); int (*detach)(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi); ssize_t (*transfer)(struct mipi_dsi_host *host, struct mipi_dsi_msg *msg); }; /** * struct mipi_dsi_host - DSI host device * @dev: driver model device node for this DSI host * @ops: DSI host operations */ struct mipi_dsi_host { struct device *dev; const struct mipi_dsi_host_ops *ops; }; int mipi_dsi_host_register(struct mipi_dsi_host *host); void mipi_dsi_host_unregister(struct mipi_dsi_host *host); /* DSI mode flags */ /* video mode */ #define MIPI_DSI_MODE_VIDEO BIT(0) /* video burst mode */ #define MIPI_DSI_MODE_VIDEO_BURST BIT(1) /* video pulse mode */ #define MIPI_DSI_MODE_VIDEO_SYNC_PULSE BIT(2) /* enable auto vertical count mode */ #define MIPI_DSI_MODE_VIDEO_AUTO_VERT BIT(3) /* enable hsync-end packets in vsync-pulse and v-porch area */ #define MIPI_DSI_MODE_VIDEO_HSE BIT(4) /* disable hfront-porch area */ #define MIPI_DSI_MODE_VIDEO_HFP BIT(5) /* disable hback-porch area */ #define MIPI_DSI_MODE_VIDEO_HBP BIT(6) /* disable hsync-active area */ #define MIPI_DSI_MODE_VIDEO_HSA BIT(7) /* flush display FIFO on vsync pulse */ #define MIPI_DSI_MODE_VSYNC_FLUSH BIT(8) /* disable EoT packets in HS mode */ #define MIPI_DSI_MODE_EOT_PACKET BIT(9) /* device supports non-continuous clock behavior (DSI spec 5.6.1) */ #define MIPI_DSI_CLOCK_NON_CONTINUOUS BIT(10) /* transmit data in low power */ #define MIPI_DSI_MODE_LPM BIT(11) enum mipi_dsi_pixel_format { MIPI_DSI_FMT_RGB888, MIPI_DSI_FMT_RGB666, MIPI_DSI_FMT_RGB666_PACKED, MIPI_DSI_FMT_RGB565, }; /** * struct mipi_dsi_device - DSI peripheral device * @host: DSI host for this peripheral * @dev: driver model device node for this peripheral * @channel: virtual channel assigned to the peripheral * @format: pixel format for video mode * @lanes: number of active data lanes * @mode_flags: DSI operation mode related flags */ struct mipi_dsi_device { struct mipi_dsi_host *host; struct device dev; unsigned int channel; unsigned int lanes; enum mipi_dsi_pixel_format format; unsigned long mode_flags; }; static inline struct mipi_dsi_device *to_mipi_dsi_device(struct device *dev) { return container_of(dev, struct mipi_dsi_device, dev); } int mipi_dsi_attach(struct mipi_dsi_device *dsi); int mipi_dsi_detach(struct mipi_dsi_device *dsi); ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, const void *data, size_t len); ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, size_t len); /** * struct mipi_dsi_driver - DSI driver * @driver: device driver model driver * @probe: callback for device binding * @remove: callback for device unbinding * @shutdown: called at shutdown time to quiesce the device */ struct mipi_dsi_driver { struct device_driver driver; int(*probe)(struct mipi_dsi_device *dsi); int(*remove)(struct mipi_dsi_device *dsi); void (*shutdown)(struct mipi_dsi_device *dsi); }; static inline struct mipi_dsi_driver * to_mipi_dsi_driver(struct device_driver *driver) { return container_of(driver, struct mipi_dsi_driver, driver); } static inline void *mipi_dsi_get_drvdata(const struct mipi_dsi_device *dsi) { return dev_get_drvdata(&dsi->dev); } static inline void mipi_dsi_set_drvdata(struct mipi_dsi_device *dsi, void *data) { dev_set_drvdata(&dsi->dev, data); } int mipi_dsi_driver_register(struct mipi_dsi_driver *driver); void mipi_dsi_driver_unregister(struct mipi_dsi_driver *driver); #define module_mipi_dsi_driver(__mipi_dsi_driver) \ module_driver(__mipi_dsi_driver, mipi_dsi_driver_register, \ mipi_dsi_driver_unregister) #endif /* __DRM_MIPI_DSI__ */ |